Senior NK guy here... don’t get me wrong I love my job... I make great money, love the airplane, love the company and drive to work.... but if I’m being honest if I were in your shoes and I had a guaranteed spot at AA i would wait for it come hell or high water. I can’t believe this is even turning into a conversation. You have a seniority number at American Airlines... unless your 55 years old... WAIT IT OUT! Between retirements and overall movement, I think your nuts. Just my two cents... good luck with whatever you choose to do.